Are you confused by the abbreviations you see?? Mailing lists tend to use quite a few abbreviations so people do not have to type out repetitive phrases or words. Here are a few of the most commonly used ones on EXOTIC-L:

BTW = By The Way
IMHO = In My Humble (Honest) Opinion
TIA = Thanks In Advance
OTOH = On The Other Hand
ROTFL = Roll On The Floor Laughing
CAG = Congo African Grey
TAG = Timneh African Grey
BFA = Blue Fronted Amazon
DYHA = Double Yellow Headed Amazon
YNA = Yellow Naped Amazon
OWA = Orange Winged Amazon (or OW)
WFA = White Fronted Amazon
B&G = Blue & Gold Macaw
'Tiel = Cockatiel
'Too = Cockatoo